3/5 fire 3rd bullet?

[kevdawg21]

3/5 live game, $200 buy in. Villian in this hand was just moved here from a broken game, so I don't have any sort of read on him. My table image should be pretty solid though.

Chip counts:

Hero ($210)
Villian ($400)

Hero is CO with Q [img]/images/graemlins/club.gif[/img] 3 [img]/images/graemlins/club.gif[/img]

Preflop: 2 limps, hero raises to $25, BB calls, 1 limper calls.

Flop ($80): A [img]/images/graemlins/heart.gif[/img] 8 [img]/images/graemlins/spade.gif[/img] 6 [img]/images/graemlins/club.gif[/img]

BB checks, limper checks, hero bets $40, BB calls, limper folds.

Turn ($160): K [img]/images/graemlins/club.gif[/img]

BB checks, hero bets $60, BB calls.

River ($280): J [img]/images/graemlins/diamond.gif[/img]

BB checks, hero...?

Give up, or fire the 3rd shell? I've been putting him on a weak ace or an OESD. If he has the ace, he's not folding for my last $85, and if he had the open ended, then I can beat him at show down. What should I do?

Also, was the turn bet a dumb idea? Since I knew nothing about him should I just have taken the free card? Should I have bet the turn harder?